2  * linux/drivers/video/hecubafb.c -- FB driver for Hecuba/Apollo controller
12  * This work was possible because of apollo display code from E-Ink's website
15  * available by E-Ink on its support site. Some commands such as 0xA4
24  * It is intended to be architecture independent. A board specific driver
46 /* Display specific information */
75 	par->board->set_data(par, data);  in apollo_send_data()
78 	par->board->set_ctl(par, HCB_DS_BIT, 0);  in apollo_send_data()
81 	par->board->wait_for_ack(par, 0);  in apollo_send_data()
84 	par->board->set_ctl(par, HCB_DS_BIT, 1);  in apollo_send_data()
87 	par->board->wait_for_ack(par, 1);  in apollo_send_data()
93 	par->board->set_ctl(par, HCB_CD_BIT, 1);  in apollo_send_command()
99 	par->board->set_ctl(par, HCB_CD_BIT, 0);  in apollo_send_command()
105 	unsigned char *buf = par->info->screen_buffer;  in hecubafb_dpy_update()
120 	hecubafb_dpy_update(info->par);  in hecubafb_dpy_deferred_io()
125 	struct hecubafb_par *par = info->par;  in hecubafb_defio_damage_range()
133 	struct hecubafb_par *par = info->par;  in hecubafb_defio_damage_area()
155 	struct hecuba_board *board;  in hecubafb_probe()  local
156 	int retval = -ENOMEM;  in hecubafb_probe()
161 	/* pick up board specific routines */  in hecubafb_probe()
162 	board = dev->dev.platform_data;  in hecubafb_probe()
163 	if (!board)  in hecubafb_probe()
164 		return -EINVAL;  in hecubafb_probe()
166 	/* try to count device specific driver, if can't, platform recalls */  in hecubafb_probe()
167 	if (!try_module_get(board->owner))  in hecubafb_probe()
168 		return -ENODEV;  in hecubafb_probe()
176 	info = framebuffer_alloc(sizeof(struct hecubafb_par), &dev->dev);  in hecubafb_probe()
180 	info->screen_buffer = videomemory;  in hecubafb_probe()
181 	info->fbops = &hecubafb_ops;  in hecubafb_probe()
183 	info->var = hecubafb_var;  in hecubafb_probe()
184 	info->fix = hecubafb_fix;  in hecubafb_probe()
185 	info->fix.smem_len = videomemorysize;  in hecubafb_probe()
186 	par = info->par;  in hecubafb_probe()
187 	par->info = info;  in hecubafb_probe()
188 	par->board = board;  in hecubafb_probe()
189 	par->send_command = apollo_send_command;  in hecubafb_probe()
190 	par->send_data = apollo_send_data;  in hecubafb_probe()
192 	info->flags = FBINFO_VIRTFB;  in hecubafb_probe()
194 	info->fbdefio = &hecubafb_defio;  in hecubafb_probe()
206 	retval = par->board->init(par);  in hecubafb_probe()
216 	module_put(board->owner);  in hecubafb_probe()
225 		struct hecubafb_par *par = info->par;  in hecubafb_remove()
228 		vfree(info->screen_buffer);  in hecubafb_remove()
229 		if (par->board->remove)  in hecubafb_remove()
230 			par->board->remove(par);  in hecubafb_remove()
231 		module_put(par->board->owner);  in hecubafb_remove()